package com.itheima;


import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class CollectionsDemo {
    public static void main(String[] args) {
        test1();
    }
    public static void test0(String[] args) {
        List<String> list = new ArrayList<String>();
        Collections.addAll(list,"张三","李四","王五","赵六");
        list.forEach(System.out::println);
        System.out.println("--------------------------------");
        //打乱集合的顺序
        Collections.shuffle(list);
        list.forEach(System.out::println);

    }

    public static void test1() {
        List<Integer> list = new ArrayList<>();
        Collections.addAll(list, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
        //排序
        Collections.sort(list);
        list.forEach(System.out::println);
        Collections.sort(list,(o1,o2) ->{
                return o2 - o1;
        });
        System.out.println("--------------------------------");
        list.forEach(System.out::println);
        System.out.println("--------------------------------");
        List<Student> list1 = new ArrayList<>();
        list1.add(new Student("张三", 18));
        list1.add(new Student("王五", 19));
        list1.add(new Student("赵六", 21));
        list1.add(new Student("李四", 20));
        Collections.sort(list1);
        list1.forEach(System.out::println);

    }

}
